Changing down problem.

[Pokerboy89]

I have been through the forums and have not really found any similar problems posted so though I'll start a new thread.

I am currently working late shifts (retail management between 6pm and 3am) riding from my place to work is lovely and steady no real problems but upon my journey home I have odd issues.(its only at home time during the day there are no problems)

I leave my bike to warm up as its normally cold around this time in the morning after its warm (usually 5 mins or a little longer) I'll ride off but when I come to junctions or roundabouts I'm unable to gear down in a normal force its almost as if its stuck. When i've managed to gear down my bike also pulls down (as if I'm braking hard on the front brake) but with a little revs its okay.

I'm not 100% sure if I'm at fault for not letting it warm up long enough or if this is a known issue, I've had 2 do a lot of work on this bike as the previous owner didn't look after it so I'm not affraid to get my hands dirty :D any suggestions as to what it could be would be great.

many thanks for looking and any suggestions you've given.

[Sid Squid]

Don't leave your bike to warm up - start it, ride it. Warming up is all deficit, no benefit.
Changing down: Is the lever solid or does it move down against spring pressure?